Heat Pump Efficiency Drops Below 35 Degrees; Repair or Replace Decision Thresholds

https://precisioneverydayhvac.tearosediner.net/most-expensive-hvac-parts-cost-1-500-to-4-000-when-no-cool-benchmarks-go-unmonitored

Heat pumps lose meaningful efficiency when outdoor temperatures fall below 35°F, signaling a critical repair-versus-replace threshold for Sacramento homeowners